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Finding the Fourth Proportional to 381,808.40, 571,546.20 and 297,827.60

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Solution

The fourth proportional to 381,808.40, 571,546.20 and 297,827.60 is: 445,831.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,808.40 : 571,546.20 = 297,827.60 : x
  2. Step 2: Convert to fraction form
    381,808.40/571,546.20 = 297,827.60/x
  3. Step 3: Cross multiply
    381,808.40x = 571,546.20 × 297,827.60
  4. Step 4: Simplify right side
    381,808.40x = 170,222,233,035.12
  5. Step 5: Solve for x
    x = 170,222,233,035.12/381,808.40
  6. Step 6: Final answer
    x = 445,831.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.